Surface-bound chemical vapour deposition of carbon nanotubes: In situ study of catalyst activation (Articolo in rivista)

Type
Label
  • Surface-bound chemical vapour deposition of carbon nanotubes: In situ study of catalyst activation (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mattevi, C; Hofmann, S; Cantoro, M; Ferrari, AC; Robertson, J; Castellarin-Cudia, C; Dolafi, S; Goldoni, A; Cepek, C (2008)
    Surface-bound chemical vapour deposition of carbon nanotubes: In situ study of catalyst activation
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mattevi, C; Hofmann, S; Cantoro, M; Ferrari, AC; Robertson, J; Castellarin-Cudia, C; Dolafi, S; Goldoni, A; Cepek, C (literal)
Pagina inizio
  • 2238 (literal)
Pagina fine
  • 2242 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 40 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Mattevi, C.] Univ Padua, Dipartimento Sci Chim, I-335131 Padua, Italy; [Mattevi, C.; Cepek, C.] INFM, CNR, Lab Nazl TASC, I-34012 Trieste, Italy; [Hofmann, S.; Cantoro, M.; Ferrari, A. C.; Robertson, J.] Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England; [Castellarin-Cudia, C.; Dolafi, S.; Goldoni, A.] Sincrotrone Trieste SCpA, Div Surface Sci, I-34012 Trieste, Italy (literal)
Titolo
  • Surface-bound chemical vapour deposition of carbon nanotubes: In situ study of catalyst activation (literal)
Abstract
  • We combine in situ X-ray photoelectron spectroscopy and ex situ electron and Raman spectroscopy to study chemical interactions of SiO2-supported Fe catalyst films during C2H2 exposure in the 400-600 degrees C temperature range. Carbon nanotubes nucleate at C,H, pressures below 10(-6) mbar, which allows a time-resolved recording of core level spectra. We find a rapid transition from an initial chemisorbed carbon on metallic Fe catalyst nanoparticles to a sp(2) graphitic carbon network. Pre-treating the Fe catalyst film by H-2 sputtering influences the initial catalyst de-wetting and increases carbon nanotube yield. (C) 2007 Elsevier B.V. All rights reserved. (literal)
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